feat: convert nop unpacker to new base class

Author: jstucke

fact_extractor/plugins/unpacking/nop/code/nop.py

@@ -1,22 +1,19 @@
 """
-This plugin does not unpack any files files.
+This plugin does not unpack any files.
 """
 
-NAME = 'NOP'
-MIME_PATTERNS = ['generic/nop', 'inode/symlink']
-VERSION = '0.1'
+from plugins.base_class import UnpackingPlugin
 
 
-def unpack_function(*_, **__):
-    """
-    file_path specifies the input file.
-    tmp_dir should be used to store the extracted files.
-    Optional: Return a dict with meta information
-    """
-    return {'info': 'unpacking skipped'}
+class NopUnpacker(UnpackingPlugin):
+    NAME = 'NOP'
+    MIME_PATTERNS = ('generic/nop', 'inode/symlink')
+    VERSION = '0.1'
 
-
-# ----> Do not edit below this line <----
-def setup(unpack_tool):
-    for item in MIME_PATTERNS:
-        unpack_tool.register_plugin(item, (unpack_function, NAME, VERSION))
+    def unpack_file(self, *_, **__):
+        """
+        file_path specifies the input file.
+        tmp_dir should be used to store the extracted files.
+        Optional: Return a dict with meta information
+        """
+        return {'info': 'unpacking skipped'}